[osval]

I've created a manifest file for javabean and I'm trying to
include it in the jar with the jar option , but I'm
getting the following Exception.

Code:

c:\java\example>jar cfm ch.jar c1.mft

java.io.IOException: invalid header field
at java.util.jar.Attributes.read(Attributes.java:387)
at java.util.jar.Manifest.read(Manifest.java:167)
at java.util.jar.Manifest.<init>(Manifest.java:52)
at sun.tools.jar.Main.run(Main.java:124)
at sun.tools.jar.Main.main(Main.java:904)

any ideas?
thanks